Lockable gear-shifting device



Nov. 19, 1929. H. J. TAYLOR 1,736,059

LOCKABLE GEAR SHIFTING' DEVICE Filed July 9, 1923 2 Sheets-Sheet l ATTORN EY Nov. '19, 1929.

' H. J. TAYLOR LOCKABLE GEAR SHIFTING DEVICE Filed July 9, 1923 v I m II 2 Sheets-Sheet 2 INVENTOR H/e/vwwn gala/#04 BY W ATTORNEY HERMAN a. TAY OR, or MILWAUKEE, WISCONSIN, Assrenon. BY Mnsnn ASSIGN- Manes, T0 'VULCAN MOTOR.DEVICESQ\COI-I.PANY, A CORPORATION on PENNSYL- Patented. Nov. 19, 1929 'VANIA LOCKABLFI GEAR-SHIFTING- DEVICE- .Application-filed .lul y' 9, 1923. Serial No. 650,312.

This invention relates :to lockable gear shifting devices. I

Theinvention is particularly applicable to presel'ective gear shifting devices and has among its objects to provide means for lock- I ing the selector mechanlsm of suchdevices I in a position for {neutralization of thecontrolled gears.

Another object'is to. provide a preselective gear shifting ,devicehavinga key actuated lock' associated therewith for locking. the selector mechanism in a positionfor neutralization of the controlled gears, the key for said lock: being insertable only-upon neu tralization-of the controlled gears and setting of-the selector'mechanism in neutral position.

Y Various other objects and Another object is to provide a preselective "gear "shifting device of the aforesaid" character havinga lock guard associated therewith said guard being interlocked with. the selector mechanism-and with the) gear shifting members'to prevent insertion of the key, ex-- cept .uponneutralization of' the controlled gears and setting of the selector mechanism V tatably mountedon saidshaft and are regga in neutral'position." V Another object is to'provide a gear shifting device'having means associated therewith for insuringlagai'nst removal thereof from the gear set casing upon locking of theselector mechanism.

hereinafter appear.

' i The accompanying drawings illustrate an embodiment of'the'invention which will now be described, it being understood'thatthe embodiment illustrated istnot limited to the specific "type of gear shifting device shown andlis susceptible of modification without dey partmg from the scope of the appended claims.

In'the drawing; Figure 1, is a 'plan view of a gear shifting device embodying the invention, a portion of the enclosln-g casing thereof being shown in section:

Fig. 2', is a sectlonalxvlew on thebroken line 2'2 of Fig. 1.

- Figs. '3 and aarese'ctio'nal views. on line 33 of Fig. 1 illustrating. the locking-parts in different positions. a w

Fig.5 is a planview of the lock the upper d antages, will portion of the lock guard beinglbrokeni and l w Fig. 6 is a fragmentary sectional view on line 66 of Fig. r 1

Referring to Figs. 1 and? the same;illus- 5 Said gear shifting mechanisrnincludes oscillatable gear shifting; levers I 1 and 2, oscillatable cam elements 3and 4 arranged on op posite sides'ofsaidlevers and selector means including rollers 5 and 6 mounted on-levers 7 and 8, respectively. The gear shifting leg-L53 vers 1 and-2 arerotatably mounted upon a shaft 9 and each ofathe same is provided with a bearing portion 10 at one end thereof and a bearing part 11 spaced with respect to said former bearing portion, and connected;-- 7

thereto by an offset rectangular extension 12. Levers 1 and 2 are arranged so that the extensions 12 thereof are located on oppositesides of shaft 9 and-levers 7 and "8 are rocessed to receive the'extensions 12 of levers 1 and 2, respectively. Rollers 5 and '6. each shaftlsaid-rollers assumeadifierent operative 580 positions with respect to cam elements 3 and 4. Cam elements -.3 and 4 areifixed to shafts 13 and 14:, respectively, said shafts and shaft 'Q'being supportedat opposite eends within suitable bearings provided on opposite walls E155 of an inverted box shapedcasingc The gear shiftlng device is shown- 1n connection with agear set including. shifter rods 16 'an'd'w-l'Z slidably mounted within suitable hearings .in a casing-18. gsaid' rods eac-hhave 5.90

the hub portion of oneof'saidforks. Means 1'95 3 is provided for .locking the shifter-rods 16 n and 17 in their shifted *and neutralizing positions, such-means includinga downwardly extending tailpiece'19 associated with; cam

elementi and a pair of lockingparts 20er- 2,100

ranged on opposite sides of said tail piece 7 adapter plate 21.

located between the locking parts 20 to project the same'into notches in the shifter rods and slidable within suitable bearings in-an Tail piece 19 is normally 16 and 17 for. locking of: the latter in their shifted or neutralizing positions and upon a given movement of cam elements 3'and' l in thedirection indicated by. arrows, said tail pieeeismoved out of the path of said'locking parts to free said rods. j

Adapter plate 21 is fixedtothe upper-face of the gear set casing by flat headed screws one of which is indicatedat 22 in 2 and casing 15 of, thegear shifting device is bolted to said former casing and is provided with an outwardly extending flange 23 which coversthe heads of saidscrews.

As set forth in the aforementioned'patent application the above described'gearshifting 'mechanism i's designed for'use in connection Wltll' a three speedand reverse automobile {gear-set. The cam elements 3 and 4e are operatively connected tothe clutch pedal to providefor movement thereof in the direction indicated by the arrows in Fig. 2- during release of the clutch and the selector member 9 usually connected-to a controllevern ounted'on the steering column to provide for axial ad ustment thereof. Upon'setting of shaft 9111 given axial pos tions cam elements 3 and hare adapted'to actuate roller 5' to efiect redov verseand first speed operations of lever- 1 andto'actuate roller 6 toefiect second and third speed operations of'lever 2. Also upon setting of shaft 9 in the position shown the cam elements 3'and4 are'adapted toengage the-rollers 5 and'6 to insure'neutralization of both-ofitheshift leversll and 2." As-will'now be set forth means is provided for locking shaft 9'in itsneutralizingposition suchmeans being operative only uponneutralization of both of the shift leversl and 2 and setting of shaft 9 in its neutral position.

Theilocking ineans forselector shaftf9 includesabarrel type lock. 25'having a sliding bolt 26 associated therewith. As shown in Figs. 3, 4sand 5 the rear bearing 28-ofshaft 9 has'a lug '29I-fonned-onone-side thereof said 'lug beingprovidednvith a bore 30 for receiving lock 25i'andalso havinga drilledopening 31} adjacent the underside thereoffor-receiving bolt'26. Lock 25isprovided with an eccentric pin 32 'onthe underside thereofwhich projectsinto a transverse recess33 in-the upper'side of. bolt. 26, andas shown in Figs. 3

- and4bolt*26inits unloekedpo'sition projects into-an.elongated recess 3tinthe side'of shaft 9 to preventazturning ofthelatter'whilein the locked position thereof the same is adaptedI-to-engage a recess 35inisaid shaft the latter recess being soilocat'ed that the same is opposite the-"boltffinthe neutral positionof shaft 91 Look 25 isheld against'removal from lug--29-by a pin 36 driven intoan opening in the side of said lug and extending into an'opening in said lock, and the outer end of the opening 31 for bolt 26 isclosed by a tav pered plug 37.

Lock 25 is provided with a guard 38 for covering the upper face thereof said lock guard being provided with a downwardly extending tail piece 39 having a drilled opening adjacent its lower end for receiving a hinge pin 40. Hinge pin 40 is fixed against rotation with respect to lockguardi 38 by a screw 411andthe same is supported on opposite sides of the tail piece 39 by bearing lugs 42 and43'projecting upwardly from the rear bearing 28 of shaft 9. A coil spring 44 is mounted'on the hinge pin 40 between tail piece 39 and bearing lug 42 said spring'having one end connected to said tail piece and its opposite end connected to said bearing lug to bias the lock guard toward the-closed position shown in Fig. 3; v

Lock guard 38has1interlocking means associated therewith to prevent opening thereof when shaft 9 is set in any position shaft 9 is providedw-ith' a recess 47 and upon p 3 setting of said shaft in: neutral: position said recess is located to receive ball 45; Lock guard 38' can then be openedsince theball 45' will dropzintorecess-'if and as shown in Fig. 4 upon opening of said key guard the tail piece'39 thereof holds ba1l45 inengag'ement with recess 47? to lockshaft 9. in, its neutral position. i

The lock guard381;is-alsoxinterlocked with the gear shifting levers 1 andi 2 to prevent opening thereof except; uponneutralizationof both of the shift levers Forthis purpose hinge pin 40 is provided with a projection 48 arranged above bearingportions 10%and or 11 of levers 1 1andf2" respectively, andrex-tending across the same asbest'shownin Figs; 2

andx6; The projection 48 of: hinge, pin; 40

is semicircular in cross section and the-bearing portions 10 and] '11 offlevers 1;. and 2 respectively are each-providedtwith azquarter v circular recess 49 onthe1n'pper side thereof.

for receivingsaidiprojection. The arrangement is such that upon neutralization of-both of the shift levers 1 and Q'the recesses'49 therein: are in alignment'and" the projection 48 isthen-rotatable into said recesses from the position shown in Fig.2 topermitopen- 4 ing of lock guard 38.- However if either of the shift levers 1 or 2 is in a shifted position 7 projection 51 to prevent upward movement of the device with respect to the adapter plate 21 and since said plate is secured to the gear set casing by screws 22 concealed bythe casing of the gear shifting device, it is apparent that it is impossible to remove the device from the gear set. However it will be observed from Fig. 2 that upon unlocking of the gear shifting device and shifting of lever 1 into its left hand shifted position, lug will clear projection 51 to permit removal or mounting of the dveice. If desired the projection 51 can be made integral with the gear set casing.

From the foregoing it is apparent that a very simple, rugged and compact locking means is provided, which is adapted to securely lock the selector mechanisinto prevent unauthorized use of the automobile with parts it is necessary to rotate the cam elements 3 and 4 to a given position in the direction indicated by arrows in Fig. 2. Upon movement of the cam elements to such position the neutralizing surfaces thereof co-operate with rollers 5 and 6 to prevent movement of either of the shift levers 1 or 2 to a degree sufficient to effect meshing of the controlled gears. v

What I claim as new and desire to secure by Letters Patent is:

1. The combination with a preselective gear shifting device including a part adapted to be preset in'given positions for selec-.

tion of shifting operations of the controlled gears and neutralization of all of the same,

of the controlled gears and said part.

gear shifting device including a selector part rality' of given positions for selection of shifting operations of the controlled gears and for neutralizatlonthereof, of a key ac tuated lock for'locking said partin a posi- "tionfor neutralization of the controlled gears, and a lock guard having-means associated therewith toprevent insertion of the key in the lock except upon neutralization of the controlled gears. ,1

" '3. The combination with a preselective gear "shifting device including gear shiftingmembers and parts to be set in given po- 2.The combination with a preselective adapted to bepreset in any one of a plusitions; to effect different shiftingoperations of said members selectively and in another POSliJlOiltO 'eifect neutralization thereof, of a key actuated-lock for maintaining said parts in aposition for neutralization of the con trolled gears, and lock guard interlocked with the gear shifting membersand' with said selector partslto prevent actuation of said lock except upon neutralization ofthe controlled gears and setting of said parts in a o position for neutralization of said members. 1. The combination with aipreselective gear. shifting device. including 'oscillatable gear shifting members and means foreiiect ing. shiftingand neutralizing operations of j said members selectively said means including a part to be preset in given positions for selection of shifting operations. of said members and in another position for neutralization of said members, 'ofa key actu- "ated lock associated withsaid part to lock the. same in said last mentioned position,

and a movable lock guard associated with said lock for covering the key opening therein, said. lock zguard being interlocked with said gear shifting-,m'embers and with said selector part to insure against insertion" of a key in'said lock except upon neutralization of said gear shiftinginembers and setting of said selector part in its neutralizing position. r V

5. The combination with a preselective gear shifting device to be secured to a gear set casing, said device including oscillatable gear shifting members and means for effectated with said gear shifting members to be p set thereby for preventing removal of the devicefrom the gear set casing. upon neutralization of said members. V

6. The combination with a preselective gear shifting device including oscillatable gear shifting members and means for effecting shifting and neutralizing operations 'of said members selectively, said means including apart to be preset 1n given positions for selection ofshifting operations of said N i 'inembers and in another position for neutralization of said members, of a key actuated lock associated withsaid part to lock the same in said last mentioned'position, and a lock guard movable in opposite directions to cover and expose the key opening in saidalock, said guard beinginterlocked withsaid gear shifting members and with saidselector part to insure against exposure of the keyv opening in said lock except upon neutralization of said gear shifting membersand settingof said selector part in its neutralizing-position and toalso insure against operation of said selector, part upon'opening of saidguard. 7 The combination with a gear shifting mechanism having an actuating element and speed selectingmeans, said element andsaid means being separately operable andthe latter; being adaptedto be set forpreventing the gears when in neutral relation from being moved out of such relation,.of means to lock the former means when so set and ini eluding means tOlIlSllIt-l agalnst-locking of said former means except when the gears are in neutral relation. I 8. The combination Wlth, agear shifting mechanism having an actuating element and speed selecting means said element and said means being separatelymoperable and said means having a neutral position. wherein it prevents the gears when'in'neutral relation from being moved out of such relation,. of lockingmeans for saidselecting means, said locking means including means which insures setting of said selecting means in such neutral position and also neutralization of the gears prior to locking.

In witness'whereof, I have hereunto subscribed my name.

HERMAN J. TAYLOR. 

